Hello,
I would like to know how I can get the folder name on uploadseparate=True
in order to pass it to the to the thumbnail generating function base on
Bruno slice :
http://www.web2pyslices.com/slice/show/1522/generate-a-thumbnail-that-fits-in-a-box
We already found a workaround with os.walk, but with greate amount of
folder it will come slow with time :
#!/usr/bin/env python
# coding: utf8
from gluon import current
import os
try:
from PIL import Image
except:
import Image
def SMARTHUMB(image, box, fit=True, name="thumb"):
'''Downsample the image.
@param img: Image - an Image-object
@param box: tuple(x, y) - the bounding box of the result image
@param fit: boolean - crop the image to fill the box
'''
if image:
request = current.request
image_dir = __find_image_dir__(image, os.path.join(request.folder,
'uploads'))
img = Image.open(os.path.join(image_dir, image))
#preresize image with factor 2, 4, 8 and fast algorithm
factor = 1
while img.size[0] / factor > 2 * box[0] and img.size[1] * 2 /
factor > 2 * box[1]:
factor *= 2
if factor > 1:
img.thumbnail((img.size[0] / factor, img.size[1] / factor),
Image.NEAREST)
#calculate the cropping box and get the cropped part
if fit:
x1 = y1 = 0
x2, y2 = img.size
wRatio = 1.0 * x2 / box[0]
hRatio = 1.0 * y2 / box[1]
if hRatio > wRatio:
y1 = int(y2 / 2 - box[1] * wRatio / 2)
y2 = int(y2 / 2 + box[1] * wRatio / 2)
else:
x1 = int(x2 / 2 - box[0] * hRatio / 2)
x2 = int(x2 / 2 + box[0] * hRatio / 2)
img = img.crop((x1, y1, x2, y2))
#Resize the image with best quality algorithm ANTI-ALIAS
img.thumbnail(box, Image.ANTIALIAS)
root, ext = os.path.splitext(image)
thumb = '%s_%s%s' % (root, name, ext)
img.save(os.path.join(image_dir,thumb))
return thumb
def __find_image_dir__(name, path):
for root, dirs, files in os.walk(path):
if name in files:
return root
Thanks
Richard
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